o Expand on the definition of a sysctl, and add cross-references to   rc.conf and sysctl.conf.
o Expand on the definition of a sysctl, and add cross-references to
  rc.conf and sysctl.conf.

MFC after:	3 days

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase